diff mbox series

[7/8] linux-user/sparc64: Include TARGET_STACK_BIAS in get_sp_from_cpustate

Message ID 20210425155749.896330-8-richard.henderson@linaro.org
State New
Headers show
Series linux-user/sparc64: Implement signals | expand

Commit Message

Richard Henderson April 25, 2021, 3:57 p.m. UTC 
Generic code cares about the logical stack pointer, not the
physical one that has a bias applied for sparc64.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 linux-user/sparc/target_cpu.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.25.1
diff mbox series

Patch

diff --git a/linux-user/sparc/target_cpu.h b/linux-user/sparc/target_cpu.h
index 37f6a1d62b..1f4bed50f4 100644
--- a/linux-user/sparc/target_cpu.h
+++ b/linux-user/sparc/target_cpu.h
@@ -46,6 +46,7 @@  static inline void cpu_clone_regs_child(CPUSPARCState *env, target_ulong newsp,
 #endif
         /* ??? The kernel appears to copy one stack frame to the new stack. */
         /* ??? The kernel force aligns the new stack. */
+        /* Userspace provides a biased stack pointer value. */
         env->regwptr[WREG_SP] = newsp;
     }
 
@@ -83,7 +84,7 @@  static inline void cpu_set_tls(CPUSPARCState *env, target_ulong newtls)
 
 static inline abi_ulong get_sp_from_cpustate(CPUSPARCState *state)
 {
-    return state->regwptr[WREG_SP];
+    return state->regwptr[WREG_SP] + TARGET_STACK_BIAS;
 }
 
 #endif